Why Choose the ABB MBK309 Terminal Expansion 3PW?
The ABB MBK309 is an unassembled horizontal terminal expansion module designed for ABB CombiLine sub-distribution assemblies. Supplied under ABB order code 2CPX041699R9999, it provides a structured DIN rail mounting platform for terminal blocks within electrical distribution boards and cabinets.
The MBK309 uses horizontally arranged 35 × 15 mm DIN rails with perforations for wire holders and an additional stabilisation rail for its three-field-width construction. Its DIN rail system is continuously adjustable in depth using deep-mounting brackets, providing a usable depth range of 68–145 mm for flexible terminal installation.
With a height of 600 mm, width of 750 mm and depth of 200 mm, the MBK309 corresponds to a 4 RE × 3 PW configuration and provides 144 space units. It offers a usable terminal width of 688 mm, 150 mm row spacing and closed RAL 7035 plastic covers for an organised and protected interior arrangement.
Key Advantages
- Purpose-designed terminal expansion for ABB CombiLine sub-distribution systems.
- 3 PW / 750 mm width provides substantial terminal mounting capacity.
- 144 space units for structured terminal-block installations.
- 688 mm usable terminal width across the three-field arrangement.
- Continuously adjustable 68–145 mm usable mounting depth.
- Additional stabilisation rail supports the wide DIN rail arrangement.
Key Features
- ABB MBK309 horizontal terminal expansion module.
- ABB order code 2CPX041699R9999.
- Part of the ABB CombiLine interior fitting system.
- 4 RE / 600 mm height.
- 3 PW / 750 mm width.
- 144 space units.
- 35 × 15 mm horizontal DIN rails.
- 150 mm row spacing.
- 688 mm usable terminal width.
- 68–145 mm usable depth adjustment.
- DIN rails perforated for wire holders.
- Additional stabilisation rail for the three-field-width configuration.
- Closed plastic covers with 90-degree press-and-turn closures.
- Suitable for cabinets from 200 mm depth.
- EDF or WR mounting frame must be ordered separately.
Structured Terminal Distribution for Electrical Assemblies
Terminal expansion modules such as the ABB MBK309 provide an organised DIN rail platform for terminal blocks used to terminate and distribute conductors within electrical distribution assemblies. The horizontal rail arrangement, generous usable width and adjustable mounting depth support efficient wiring while maintaining a structured internal panel layout.
The ABB CombiLine system uses modular interior components to create configurable distribution assemblies. With 144 space units, a usable terminal width of 688 mm and adjustable mounting depth, the MBK309 is particularly suited to larger terminal groups where flexible positioning and orderly conductor management are required.
Typical Applications
- ABB CombiLine modular distribution assemblies.
- Horizontal terminal-block mounting and conductor termination.
- Commercial and industrial sub-distribution boards.
- Electrical distribution and control cabinets.
- Panel-building and switchboard applications.
- Structured multi-row terminal installations.
